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            <div class="post-toc animated"><ol class="nav"><li class="nav-item nav-level-1"><a class="nav-link" href="#%E4%B8%80%E3%80%81ESSP-AT%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F"><span class="nav-text">一、ESSP-AT是什么？</span></a></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E4%BA%8C%E3%80%81AT-%E6%8C%87%E4%BB%A4%E6%A0%BC%E5%BC%8F"><span class="nav-text">二、AT 指令格式  </span></a></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E4%B8%89%E3%80%81AT%E6%8C%87%E4%BB%A4%E8%AF%B4%E6%98%8E"><span class="nav-text">三、AT指令说明</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#1-%E5%9F%BA%E7%A1%80AT%E6%8C%87%E4%BB%A4"><span class="nav-text">1. 基础AT指令  </span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#2-WiFi%E5%8A%9F%E8%83%BDAT%E6%8C%87%E4%BB%A4"><span class="nav-text">2. WiFi功能AT指令</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#3-TCP-IP%E7%9B%B8%E5%85%B3AT%E6%8C%87%E4%BB%A4"><span class="nav-text">3. TCP&#x2F;IP相关AT指令</span></a></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E5%9B%9B%E3%80%81%E5%B8%B8%E7%94%A8AT%E6%8C%87%E4%BB%A4%E5%AE%9E%E4%BE%8B"><span class="nav-text">四、常用AT指令实例</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#1-AP-%E6%A8%A1%E5%BC%8F%E4%B8%8B%E4%BD%9C-TCP-%E6%9C%8D%E5%8A%A1%E5%99%A8"><span class="nav-text">1. AP 模式下作 TCP 服务器  </span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#2-AP-%E6%A8%A1%E5%BC%8F%E4%B8%8B%E4%BD%9C-TCP-%E5%AE%A2%E6%88%B7%E7%AB%AF"><span class="nav-text">2. AP 模式下作 TCP 客户端  </span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#3-AP-%E6%A8%A1%E5%BC%8F%E4%B8%8B-UDP-%E8%BF%9E%E6%8E%A5"><span class="nav-text">3. AP 模式下 UDP 连接  </span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#4-STA-%E6%A8%A1%E5%BC%8F%E4%B8%8B%E4%BD%9C-TCP-%E6%9C%8D%E5%8A%A1%E5%99%A8"><span class="nav-text">4. STA 模式下作 TCP 服务器  </span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#5-STA-%E6%A8%A1%E5%BC%8F%E4%B8%8B%E4%BD%9C-TCP-%E5%AE%A2%E6%88%B7%E7%AB%AF"><span class="nav-text">5. STA 模式下作 TCP 客户端  </span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#6-STA-%E6%A8%A1%E5%BC%8F%E4%B8%8B-UDP-%E8%BF%9E%E6%8E%A5"><span class="nav-text">6. STA 模式下 UDP 连接  </span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#7-AP-STA-%E6%A8%A1%E5%BC%8F%E4%B8%8B%E4%BD%9C-TCP-%E6%9C%8D%E5%8A%A1%E5%99%A8"><span class="nav-text">7. AP+STA 模式下作 TCP 服务器  </span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#8-AP-STA-%E6%A8%A1%E5%BC%8F%E4%B8%8B%E4%BD%9C-TCP-%E5%AE%A2%E6%88%B7%E7%AB%AF"><span class="nav-text">8. AP+STA 模式下作 TCP 客户端  </span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#9-AP-STA-%E6%A8%A1%E5%BC%8F%E4%B8%8B-UDP-%E8%BF%9E%E6%8E%A5"><span class="nav-text">9. AP+STA 模式下 UDP 连接  </span></a></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E4%BA%94%E3%80%81%E6%B5%8B%E8%AF%95%E5%AE%9E%E9%AA%8C"><span class="nav-text">五、测试实验</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#1-%E4%BD%BF%E7%94%A8%E5%89%8D%E5%87%86%E5%A4%87"><span class="nav-text">1. 使用前准备</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#1-1-%E6%89%80%E9%9C%80%E5%B7%A5%E5%85%B7"><span class="nav-text">1.1 所需工具</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#1-2-%E7%A1%AC%E4%BB%B6%E8%BF%9E%E6%8E%A5"><span class="nav-text">1.2 硬件连接</span></a></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#2-TCP-Client-%E9%80%8F%E4%BC%A0%E6%A8%A1%E5%BC%8F%E6%B5%8B%E8%AF%95"><span class="nav-text">2. TCP Client 透传模式测试  </span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#2-1-%E5%8A%A9%E6%89%8B%E9%85%8D%E7%BD%AE"><span class="nav-text">2.1 助手配置</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#2-2-%E9%85%8D%E7%BD%AEWiFi%E6%A8%A1%E5%9D%97"><span class="nav-text">2.2 配置WiFi模块</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#2-3-%E5%AE%9E%E9%AA%8C%E6%95%88%E6%9E%9C"><span class="nav-text">2.3 实验效果</span></a></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#3-%E5%A4%9A%E8%BF%9E%E6%8E%A5server"><span class="nav-text">3. 多连接server</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#3-1-%E9%85%8D%E7%BD%AEWiFi%E6%A8%A1%E5%9D%97"><span class="nav-text">3.1 配置WiFi模块</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#3-2-%E5%8A%A9%E6%89%8B%E9%85%8D%E7%BD%AE"><span class="nav-text">3.2 助手配置</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#3-3-%E5%AE%9E%E9%AA%8C%E6%95%88%E6%9E%9C"><span class="nav-text">3.3 实验效果</span></a></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#4-%E8%BF%9E%E6%8E%A5%E5%8E%9F%E5%AD%90%E4%BA%91"><span class="nav-text">4. 连接原子云</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#4-1-%E5%88%9B%E5%BB%BA%E8%AE%BE%E5%A4%87"><span class="nav-text">4.1 创建设备  </span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#4-2-%E8%BF%9E%E6%8E%A5%E5%88%B0%E5%8E%9F%E5%AD%90%E4%BA%91"><span class="nav-text">4.2 连接到原子云  </span></a></li></ol></li></ol></li></ol></div>
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          LV16-31-ESP8266模块-02-AT指令
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<details class="folding-tag" blue><summary> 点击查看使用工具及版本 </summary>
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              <table>    <tr>        <td align="center" width=150px>Windows</td>        <td align="left">windows11</td>    </tr>    <tr>        <td align="center">Ubuntu</td>        <td align="left">Ubuntu16.04的64位版本</td>      </tr>    <tr>        <td align="center">VMware® Workstation 16 Pro</td>        <td align="left">16.2.3 build-19376536</td>      </tr>    <tr>        <td align="center">SecureCRT</td>        <td align="left">Version 8.7.2 (x64 build 2214)   -   正式版-2020年5月14日</td>      </tr>    <tr>        <td align="center">开发板</td>        <td align="left">正点原子 i.MX6ULL Linux阿尔法开发板</td>      </tr>    <tr>        <td align="center">uboot</td>        <td align="left">NXP官方提供的uboot，NXP提供的版本为uboot-imx-rel_imx_4.1.15_2.1.0_ga(使用的uboot版本为U-Boot 2016.03)</td>      </tr>    <tr>        <td align="center">linux内核</td>        <td align="left">linux-4.15(NXP官方提供)</td>      </tr>    <tr>        <td align="center">STM32开发板</td>        <td align="left">正点原子战舰V3(STM32F103ZET6)</td>      </tr></table>
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<details class="folding-tag" blue><summary> 点击查看本文参考资料 </summary>
              <div class='content'>
              <ul><li>通用</li></ul><table><tr><td align="center">分类  </td><td align="center">网址</td><td align="center">说明</td></tr><tr><td align="center" rowspan="4">官方网站</td><td align="left"><a href="https://www.arm.com/" target="_blank">https://www.arm.com/</a></td><td align="left">ARM官方网站，在这里我们可以找到Cotex-Mx以及ARMVx的一些文档</td></tr><tr>                                            <td align="left"><a href="https://www.st.com/content/st_com/zh.html" target="_blank">https://www.st.com/content/st_com/zh.html</a></td><td align="left">ST官方网站，在这里我们可以找到STM32的相关文档</td></tr><tr>                                            <td align="left"><a href="https://www.stmcu.com.cn/" target="_blank">https://www.stmcu.com.cn/</a></td><td align="left">意法半导体ST中文官方网站，在这里我们可以找到STM32的相关中文参考文档</td></tr><tr>                                            <td align="left"><a href="http://elm-chan.org/fsw/ff/00index_e.html" target="_blank">http://elm-chan.org/fsw/ff/00index_e.html</a></td><td align="left">FatFs文件系统官网</td></tr><tr><td align="center" rowspan="3">教程书籍</td><td align="left"><a href="STM32开发相关资料/01ARM参考资料/ARM Cortex-M3权威指南(中文).pdf" target="_blank">《ARM Cortex-M3权威指南》</a></td><td alirn="left" rowspan="3">ARM公司专家Joseph Yiu（姚文祥）的力作，中文翻译是NXP的宋岩</td></tr><tr>                                            <td align="left"><a href="STM32开发相关资料/01ARM参考资料/ARM Cortex-M0权威指南(中文).pdf" target="_blank">《ARM Cortex-M0权威指南》</a></td></tr><tr>                                            <td align="left"><a href="" target="_blank">《ARM Cortex-M3与Cortex-M4权威指南》</a></td></tr><tr><td align="center" rowspan="4">开发论坛</td><td align="left"><a href="http://47.111.11.73/forum.php" target="_blank">http://47.111.11.73/forum.php</a></td><td align="left">开源电子网，正点原子的资料下载及问题讨论论坛</td></tr><tr>                                            <td align="left"><a href="https://www.firebbs.cn/forum.php" target="_blank">https://www.firebbs.cn/forum.php</a></td><td align="left">国内Kinetis开发板-野火/秉火（刘火良）主持的论坛，现也做STM32和i.MX RT</td></tr><tr>                                            <td align="left"><a href="https://www.amobbs.com/index.php" target="_blank">https://www.amobbs.com/index.php</a></td><td align="left">阿莫（莫进明）主持的论坛，号称国内最早最火的电子论坛，以交流Atmel AVR系列单片机起家，现已拓展到嵌入式全平台，其STM32系列帖子有70W+。</td></tr><tr>                                            <td align="left"><a href="http://download.100ask.net/index.html" target="_blank">http://download.100ask.net/index.html</a></td><td align="left">韦东山嵌入式资料中心，有些STM32和linux的相关资料也可以来这里找。</td></tr><tr><td align="center" rowspan="3">博客参考</td><td align="left"><a href="http://www.openedv.com/" target="_blank">http://www.openedv.com/</a></td><td align="left">开源网-原子哥个人博客</td></tr><tr>                                            <td align="left"><a href="http://blog.chinaaet.com/jihceng0622" target="_blank">http://blog.chinaaet.com/jihceng0622</a></td><td align="left">博主是原Freescale现NXP的现场应用工程师</td></tr><tr>                                            <td align="left"><a href="https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/cortex-m-resources" target="_blank">cortex-m-resources</a></td><td align="left">这其实并不算是一个博客，这是ARM公司专家Joseph Yiu收集整理的所有对开发者有用的官方Cortex-M资料链接（也包含极少数外部资源链接）</td></tr></table>
              </div>
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              <table>    <tr>        <td align="center">分类</td>        <td align="center">网址</td>        <td align="center">说明</td>    </tr>    <tr>        <td align="center" rowspan="8">STM32相关</td>        <td align="left"><a href="https://www.st.com/resource/en/datasheet/stm32f103ze.pdf"                target="_blank">STM32F103xx英文数据手册</a></td>        <td align="left">STM32F103xC/D/E系列的英文数据手册</td>    </tr>    <tr>        <td align="left"><a href="https://www.stmcu.com.cn/Designresource/detail/localization_document%20/709978"                target="_blank">STM32F103xx中文数据手册</a></td>        <td align="left">STM32F103xC/D/E系列的中文数据手册</td>    </tr>    <tr>        <td align="left"><a                href="https://www.st.com/resource/en/reference_manual/rm0008-stm32f101xx-stm32f102xx-stm32f103xx-stm32f105xx-and-stm32f107xx-advanced-armbased-32bit-mcus-stmicroelectronics.pdf"                target="_blank">STM32F10xxx英文参考手册（RM0008）</a></td>        <td align="left">STM32F10xxx系列的英文参考手册</td>    </tr>    <tr>        <td align="left"><a href="https://www.stmcu.com.cn/Designresource/detail/localization_document%20/710001"                target="_blank">STM32F10xxx中文参考手册（RM0008）</a></td>        <td align="left">STM32F10xxx系列的中文参考手册</td>    </tr>    <tr>        <td align="left"><a href="https://developer.arm.com/documentation/100165/0201/?lang=en" target="_blank">Arm                Cortex-M3 处理器技术参考手册-英文版</a></td>        <td align="left">Cortex-M3技术参考手册-英文版</td>    </tr>    <tr>        <td align="left"><a                href="https://www.st.com/resource/en/programming_manual/pm0056-stm32f10xxx20xxx21xxxl1xxxx-cortexm3-programming-manual-stmicroelectronics.pdf"                target="_blank">STM32F10xxx Cortex-M3编程手册-英文版(PM0056)</a></td>        <td align="left">STM32F10xxx/20xxx/21xxx/L1xxxx系列Cortex-M3编程手册-英文版</td>    </tr>    <tr>        <td align="left"><a                href="https://doc.embedfire.com/mcu/stm32/f103/hal_general/zh/latest/index.html"                target="_blank">STM32 HAL库开发实战</a></td>        <td align="left">野火STM32开发教程在线文档——基于F103系列开发板</td>    </tr>    <tr>        <td align="left"><a                href="https://doc.embedfire.com/mcu/stm32/f103badao/std/zh/latest/index.html"                target="_blank">STM32库开发实战指南</a></td>        <td align="left">野火STM32开发教程在线文档——基于野火霸道开发板</td>    </tr>    <tr>        <td align="center" rowspan="3">SD卡相关</td>        <td align="left"><a href="https://www.sdcard.org/downloads/pls/" target="_blank">SD卡相关资料——最新版本</a></td>        <td align="left">有关SD卡的一些资料可以从这里下载</td>    </tr>    <tr>        <td align="left"><a href="https://www.sdcard.org/downloads/pls/archives/" target="_blank">SD卡相关资料——历史版本</a></td>        <td align="left">有关SD卡的一些历史版本资料可以从这里下载，比如后边看的SD卡2.0协议</td>    </tr>    <tr>        <td align="left"><a href="./" target="_blank">SD 2.0 协议标准完整版</a></td>        <td align="left">这是一篇关于SD卡2.0协议的中文文档，还是比较有参考价值的，可以一看</td>    </tr>    <tr>        <td align="center" rowspan="6">ESP32</td>        <td align="left"><a href="https://www.sdcard.org/downloads/pls/" target="_blank">SD卡相关资料——最新版本</a></td>        <td align="left">这个⼿册介绍了 ESP8266EX 的产品参数。</td>    </tr>    <tr>        <td align="left"><a href="https://docs.ai-thinker.com/_media/esp8266/docs/esp8266_start_guide_1_.pdf" target="_blank">ESP8266 系列入门教程</a></td>        <td align="left">一个入门手册(安信可官网)</td>    </tr>    <tr>        <td align="left"><a href="https://docs.ai-thinker.com/_media/esp8266/esp8266_at_instruction_set_cn.pdf" target="_blank">ESP8266 AT 指令集</a></td>        <td align="left">这是一篇关于ESSP8266的AT指令集的文档(安信可官网)</td>    </tr>    <tr>        <td align="left"><a href="https://docs.ai-thinker.com/_media/esp8266/esp8266_at_command_examples_cn.pdf" target="_blank">ESP8266 AT 指令使用实例</a></td>        <td align="left">这是一篇关于ESSP8266的AT指令集使用实例的文档(安信可官网)</td>    </tr>    <tr>        <td align="left"><a href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/Get_Started/index.html" target="_blank"> ESP-AT 用户指南</a></td>        <td align="left">本指南详细介绍 ESP-AT 是什么、如何连接硬件、以及如何下载和烧录 AT 固件(乐鑫官网)</td>    </tr>    <tr>        <td align="left"><a href="https://www.espressif.com.cn/zh-hans/support/documents/technical-documents" target="_blank">乐鑫官方技术文档</a></td>        <td align="left">这里是乐鑫官方技术文档的入口，文档都可以来这里找(乐鑫官网)</td>    </tr></table>
              </div>
            </details> 

<h1 id="一、ESSP-AT是什么？"><a href="#一、ESSP-AT是什么？" class="headerlink" title="一、ESSP-AT是什么？"></a><font size=3>一、ESSP-AT是什么？</font></h1><p>ESP-AT 是乐鑫开发的可直接用于量产的物联网应用固件，旨在降低客户开发成本，快速形成产品。通过 ESP-AT 指令，您可以快速加入无线网络、连接云平台、实现数据通信以及远程控制等功能，真正的通过无线通讯实现万物互联。</p>
<p>ESP-AT 是基于 ESP-IDF 或 ESP8266_RTOS_SDK 实现的软件工程。它使 ESP 模组作为从机，MCU 作为主机。MCU 发送 AT 命令给 ESP 模组，控制 ESP 模组执行不同的操作，并接收 ESP 模组返回的 AT 响应。ESP-AT 提供了大量功能不同的 AT 命令，如 Wi-Fi 命令、TCP&#x2F;IP 命令、Bluetooth LE 命令、Bluetooth 命令、MQTT 命令、HTTP 命令、Ethernet 命令等。</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/ESP-AT-overview.jpg" alt="ESP-AT 概览" />

<p>AT 命令以 “AT” 开始，代表 Attention，以新的一行 (CR LF) 为结尾。输入的每条命令都会返回 <code>OK</code> 或 <code>ERROR</code> 的响应，表示当前命令的最终执行结果。注意，所有 AT 命令均为串行执行，每次只能执行一条命令。因此，在使用 AT 命令时，应等待上一条命令执行完毕后，再发送下一条命令。如果上一条命令未执行完毕，又发送了新的命令，则会返回 <code>busy p...</code> 提示。更多有关 AT 命令的信息可参见 <a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/index.html">AT 命令集</a>。</p>
<p>默认配置下，MCU 通过 UART 连接至 ESP 模组、发送 AT 命令以及接收 AT 响应。但是，您也可以根据实际使用情况修改程序，使用其他的通信接口，例如 SDIO。</p>
<h1 id="二、AT-指令格式"><a href="#二、AT-指令格式" class="headerlink" title="二、AT 指令格式  "></a><font size=3>二、AT 指令格式  </font></h1><p>AT 指令可以细分为四种类型，如下表所示：  </p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240108223813086.png" alt="image-20240108223813086" />

<p>注意：</p>
<p>（1）不是每条 AT 指令都具有以上四种指令格式的命令。</p>
<p>（2）中括号（[ ]）内的参数为缺省值，不必填写或者可能不显示。</p>
<p>（3）使用双引号表示字符串数据，例如： AT+CWJAP&#x3D;”ALIENTEK”,”15902020353”。</p>
<p>（4）ATK-MW8266D 模块的 UART 通讯波特率为 115200bps。</p>
<p>（5）AT 指令必须大写，且每条指令都需以回车换行符结尾<code>\r\n</code>。</p>
<h1 id="三、AT指令说明"><a href="#三、AT指令说明" class="headerlink" title="三、AT指令说明"></a><font size=3>三、AT指令说明</font></h1><p>模块默认是 AT 指令状态，模块波特率： 115200（8 位数据位， 1 位停止位），这里我们看一下几个用户常用指令，详细的指令集可以参《ESP8266_AT 指令集 V2.1.0.pdf》这个文档。 我们其实可以直接去乐鑫或者安信可官网查阅，例如乐鑫官网的<a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/index.html#at">AT 命令集</a>。</p>
<h2 id="1-基础AT指令"><a href="#1-基础AT指令" class="headerlink" title="1. 基础AT指令  "></a><font size=3>1. 基础AT指令  </font></h2><ul>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Basic_AT_Commands.html#cmd-at">AT</a>：测试 AT 启动</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Basic_AT_Commands.html#cmd-rst">AT+RST</a>：重启模块</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Basic_AT_Commands.html#cmd-gmr">AT+GMR</a>：查看版本信息</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Basic_AT_Commands.html#cmd-cmd">AT+CMD</a>：查询当前固件支持的所有命令及命令类型</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Basic_AT_Commands.html#cmd-ate">ATE</a>：开启或关闭 AT 回显功能</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Basic_AT_Commands.html#cmd-restore">AT+RESTORE</a>：恢复出厂设置</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Basic_AT_Commands.html#cmd-uartc">AT+UART_CUR</a>：设置 UART 当前临时配置，不保存到 flash</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Basic_AT_Commands.html#cmd-uartd">AT+UART_DEF</a>：设置 UART 默认配置, 保存到 flash</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Basic_AT_Commands.html#cmd-sysstore">AT+SYSSTORE</a>：设置参数存储模式</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Basic_AT_Commands.html#cmd-sysreg">AT+SYSREG</a>：读写寄存器</li>
</ul>
<h2 id="2-WiFi功能AT指令"><a href="#2-WiFi功能AT指令" class="headerlink" title="2. WiFi功能AT指令"></a><font size=3>2. WiFi功能AT指令</font></h2><ul>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-mode">AT+CWMODE</a>：查询&#x2F;设置 Wi-Fi 模式 (Station&#x2F;SoftAP&#x2F;Station+SoftAP)</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-jap">AT+CWJAP</a>：连接 AP</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-lap">AT+CWLAP</a>：扫描当前可用的 AP</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-qap">AT+CWQAP</a>：断开与 AP 的连接</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-sap">AT+CWSAP</a>：配置 ESP32 SoftAP 参数</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-lif">AT+CWLIF</a>：查询连接到 ESP SoftAP 的 station 信息</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-qif">AT+CWQIF</a>：断开 station 与 ESP SoftAP 的连接</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-autoc">AT+CWAUTOCONN</a>：上电是否自动连接 AP</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-stamac">AT+CIPSTAMAC</a>：查询&#x2F;设置 ESP Station 的 MAC 地址</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-apmac">AT+CIPAPMAC</a>：查询&#x2F;设置 ESP SoftAP 的 MAC 地址</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-ipsta">AT+CIPSTA</a>：查询&#x2F;设置 ESP Station 的 IP 地址</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-ipap">AT+CIPAP</a>：查询&#x2F;设置 ESP SoftAP 的 IP 地址</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-starts">AT+CWSTARTSMART</a>：开启 SmartConfig</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-stops">AT+CWSTOPSMART</a>：停止 SmartConfig</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-wps">AT+WPS</a>：设置 WPS 功能</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-mdns">AT+MDNS</a>：设置 mDNS 功能</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/Wi-Fi_AT_Commands.html#cmd-hostname">AT+CWHOSTNAME</a>：查询&#x2F;设置 ESP Station 的主机名称</li>
</ul>
<h2 id="3-TCP-IP相关AT指令"><a href="#3-TCP-IP相关AT指令" class="headerlink" title="3. TCP&#x2F;IP相关AT指令"></a><font size=3>3. TCP&#x2F;IP相关AT指令</font></h2><ul>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-status">AT+CIPSTATUS</a>：查询 TCP&#x2F;UDP&#x2F;SSL 连接状态和信息</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-domain">AT+CIPDOMAIN</a>：域名解析</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-start">AT+CIPSTART</a>：建立 TCP 连接、UDP 传输或 SSL 连接</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-startex">AT+CIPSTARTEX</a>：建立自动分配 ID 的 TCP 连接、UDP 传输或 SSL 连接</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-send">AT+CIPSEND</a>：在 <a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/index_of_abbreviations.html#term-0">普通传输模式</a> 或 Wi-Fi <a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/index_of_abbreviations.html#term-1">透传模式</a> 下发送数据</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-sendex">AT+CIPSENDEX</a>：在 <a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/index_of_abbreviations.html#term-0">普通传输模式</a> 下采用扩展的方式发送数据</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-close">AT+CIPCLOSE</a>：关闭 TCP&#x2F;UDP&#x2F;SSL 连接</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-ifsr">AT+CIFSR</a>：查询本地 IP 地址和 MAC 地址</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-mux">AT+CIPMUX</a>：启用&#x2F;禁用多连接模式</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-server">AT+CIPSERVER</a>：建立&#x2F;关闭 TCP 或 SSL 服务器</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-ipmode">AT+CIPMODE</a>：查询&#x2F;设置传输模式</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-savet">AT+SAVETRANSLINK</a>：设置开机 <a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/index_of_abbreviations.html#term-1">透传模式</a> 信息</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-sto">AT+CIPSTO</a>：查询&#x2F;设置本地 TCP 服务器超时时间</li>
<li><a target="_blank" rel="noopener" href="https://espressif-docs.readthedocs-hosted.com/projects/esp-at/zh-cn/release-v2.2.0.0_esp8266/AT_Command_Set/TCP-IP_AT_Commands.html#cmd-cipping">AT+PING</a>：ping 对端主机</li>
</ul>
<h1 id="四、常用AT指令实例"><a href="#四、常用AT指令实例" class="headerlink" title="四、常用AT指令实例"></a><font size=3>四、常用AT指令实例</font></h1><h2 id="1-AP-模式下作-TCP-服务器"><a href="#1-AP-模式下作-TCP-服务器" class="headerlink" title="1. AP 模式下作 TCP 服务器  "></a><font size=3>1. AP 模式下作 TCP 服务器  </font></h2><table>
<thead>
<tr>
<th>发送指令</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>AT+CWMODE&#x3D;2</td>
<td>设置为 AP 模式</td>
</tr>
<tr>
<td>AT+RST</td>
<td>重启生效</td>
</tr>
<tr>
<td>AT+CWSAP&#x3D;”ATK-MW8266D”, ”12345678”,1,4</td>
<td>设置 AP 参数。 SSID 为 ATK-MW8266D、密码为 12345678、 通道为 1、加密方式为 WPA_WPA2_PSK</td>
</tr>
<tr>
<td>AT+CIPMUX&#x3D;1</td>
<td>开启多连接</td>
</tr>
<tr>
<td>AT+CIPSERVER&#x3D;1,8086</td>
<td>开启 SERVER 模式，端口号为 8086</td>
</tr>
<tr>
<td>AT+CIPSEND&#x3D;0,25</td>
<td>向 ID0 发送 25 字节数据包</td>
</tr>
</tbody></table>
<h2 id="2-AP-模式下作-TCP-客户端"><a href="#2-AP-模式下作-TCP-客户端" class="headerlink" title="2. AP 模式下作 TCP 客户端  "></a><font size=3>2. AP 模式下作 TCP 客户端  </font></h2><table>
<thead>
<tr>
<th>发送指令</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>AT+CWMODE&#x3D;2</td>
<td>设置为 AP 模式</td>
</tr>
<tr>
<td>AT+RST</td>
<td>重启生效</td>
</tr>
<tr>
<td>AT+CWSAP&#x3D;”ATK-MW8266D”,”12345678”,1,4</td>
<td>设置 AP 参数。 SSID 为 ATK-MW8266D、密码为 12345678、通道为 1、加密方式为 WPA_WPA2_PSK</td>
</tr>
<tr>
<td>AT+CIPMUX&#x3D;0</td>
<td>开启单连接</td>
</tr>
<tr>
<td>AT+CIPSTART&#x3D;”TCP”, ”192.168.4.XXX”,8086</td>
<td>建立 TCP 连接到 192.168.4.XXX:8086</td>
</tr>
<tr>
<td>AT+CIPMODE&#x3D;1</td>
<td>开启透传模式（仅单连接 Client 时支持）</td>
</tr>
<tr>
<td>AT+CIPSEND</td>
<td>开始发送数据</td>
</tr>
</tbody></table>
<h2 id="3-AP-模式下-UDP-连接"><a href="#3-AP-模式下-UDP-连接" class="headerlink" title="3. AP 模式下 UDP 连接  "></a><font size=3>3. AP 模式下 UDP 连接  </font></h2><table>
<thead>
<tr>
<th>发送指令</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>AT+CWMODE&#x3D;2</td>
<td>设置为 AP 模式</td>
</tr>
<tr>
<td>AT+RST</td>
<td>重启生效</td>
</tr>
<tr>
<td>AT+CWSAP&#x3D;”ATK-MW8266D”, ”12345678”,1,4</td>
<td>设置 AP 参数。 SSID 为 ATK-MW8266D、密码为 12345678、 通道为 1、加密方式为 WPA_WPA2_PSK</td>
</tr>
<tr>
<td>AT+CIPMUX&#x3D;0</td>
<td>开启单连接</td>
</tr>
<tr>
<td>AT+CIPSTART&#x3D;”UDP”, “192.168.4.XXX”,8086</td>
<td>建立 UDP 连接到 192.168.4.XXX:8086</td>
</tr>
<tr>
<td>AT+CIPSEND&#x3D;25</td>
<td>向目标 UDP 发送 25 字节数据</td>
</tr>
</tbody></table>
<h2 id="4-STA-模式下作-TCP-服务器"><a href="#4-STA-模式下作-TCP-服务器" class="headerlink" title="4. STA 模式下作 TCP 服务器  "></a><font size=3>4. STA 模式下作 TCP 服务器  </font></h2><table>
<thead>
<tr>
<th>发送指令</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>AT+CWMODE&#x3D;1</td>
<td>设置为 STA 模式</td>
</tr>
<tr>
<td>AT+RST</td>
<td>重启生效</td>
</tr>
<tr>
<td>AT+CWJAP&#x3D;”ATK-MW8266D”, ”12345678”</td>
<td>加入 WiFi 热点。 SSID： ATK-MW8266D、密码： 12345678</td>
</tr>
<tr>
<td>AT+CIPMUX&#x3D;1</td>
<td>开启多连接</td>
</tr>
<tr>
<td>AT+CIPSERVER&#x3D;1,8086</td>
<td>开启 SERVER 模式，端口号为 8086</td>
</tr>
<tr>
<td>AT+CIPSEND&#x3D;0,25</td>
<td>向 ID0 发送 25 字节数据包</td>
</tr>
</tbody></table>
<h2 id="5-STA-模式下作-TCP-客户端"><a href="#5-STA-模式下作-TCP-客户端" class="headerlink" title="5. STA 模式下作 TCP 客户端  "></a><font size=3>5. STA 模式下作 TCP 客户端  </font></h2><table>
<thead>
<tr>
<th>发送指令</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>AT+CWMODE&#x3D;1</td>
<td>设置为 STA 模式</td>
</tr>
<tr>
<td>AT+RST</td>
<td>重启生效</td>
</tr>
<tr>
<td>AT+CWJAP&#x3D;”ATK-MW8266D”, ”12345678”</td>
<td>加入 WiFi 热点。 SSID： ATK-MW8266D、密码： 12345678</td>
</tr>
<tr>
<td>AT+CIPMUX&#x3D;0</td>
<td>开启单连接</td>
</tr>
<tr>
<td>AT+CIPSTART&#x3D;”TCP”, ”192.168.4.XXX”,8086</td>
<td>建立 TCP 连接到 192.168.4.XXX:8086</td>
</tr>
<tr>
<td>AT+CIPMODE&#x3D;1</td>
<td>开启透传模式（仅单连接 Client 时支持）</td>
</tr>
<tr>
<td>AT+CIPSEND</td>
<td>开始发送数据</td>
</tr>
</tbody></table>
<h2 id="6-STA-模式下-UDP-连接"><a href="#6-STA-模式下-UDP-连接" class="headerlink" title="6. STA 模式下 UDP 连接  "></a><font size=3>6. STA 模式下 UDP 连接  </font></h2><table>
<thead>
<tr>
<th>发送指令</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>AT+CWMODE&#x3D;1</td>
<td>设置为 STA 模式</td>
</tr>
<tr>
<td>AT+RST</td>
<td>重启生效</td>
</tr>
<tr>
<td>AT+CWJAP&#x3D;”ATK-MW8266D”, ”12345678”</td>
<td>加入 WiFi 热点。 SSID： ATK-MW8266D、密码： 12345678</td>
</tr>
<tr>
<td>AT+CIPMUX&#x3D;0</td>
<td>开启单连接</td>
</tr>
<tr>
<td>AT+CIPSTART&#x3D;”UDP”, “192.168.4.XXX”,8086</td>
<td>建立 UDP 连接到 192.168.4.XXX:8086</td>
</tr>
<tr>
<td>AT+CIPSEND&#x3D;25</td>
<td>向目标 UDP 发送 25 字节数据</td>
</tr>
</tbody></table>
<h2 id="7-AP-STA-模式下作-TCP-服务器"><a href="#7-AP-STA-模式下作-TCP-服务器" class="headerlink" title="7. AP+STA 模式下作 TCP 服务器  "></a><font size=3>7. AP+STA 模式下作 TCP 服务器  </font></h2><table>
<thead>
<tr>
<th>发送指令</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>AT+CWMODE&#x3D;3</td>
<td>设置为 AP+STA 模式</td>
</tr>
<tr>
<td>AT+RST</td>
<td>重启生效</td>
</tr>
<tr>
<td>AT+CWSAP&#x3D;”ATK-MW8266D”, ”12345678”,1,4</td>
<td>设置 AP 参数。 SSID 为 ATK-MW8266D、密码为 12345678、 通道为 1、加密方式为 WPA_WPA2_PSK</td>
</tr>
<tr>
<td>AT+CWJAP&#x3D;”ALIENTEK”, ”12345678”</td>
<td>加入 WiFi 热点。 SSID： ALIENTEK、密码： 12345678</td>
</tr>
<tr>
<td>AT+CIPMUX&#x3D;1</td>
<td>开启多连接</td>
</tr>
<tr>
<td>AT+CIPSERVER&#x3D;1,8086</td>
<td>开启 SERVER 模式，端口号为 8086</td>
</tr>
<tr>
<td>AT+CIPSTO&#x3D;1200</td>
<td>设置服务器超时时间 1200s</td>
</tr>
<tr>
<td>AT+CIPSEND&#x3D;0,25</td>
<td>向 ID0 发送数据</td>
</tr>
<tr>
<td>AT+CIPSEND&#x3D;1,25</td>
<td>向 ID1 发送数据</td>
</tr>
</tbody></table>
<h2 id="8-AP-STA-模式下作-TCP-客户端"><a href="#8-AP-STA-模式下作-TCP-客户端" class="headerlink" title="8. AP+STA 模式下作 TCP 客户端  "></a><font size=3>8. AP+STA 模式下作 TCP 客户端  </font></h2><table>
<thead>
<tr>
<th>发送指令</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>AT+CWMODE&#x3D;3</td>
<td>设置为 AP+STA 模式</td>
</tr>
<tr>
<td>AT+RST</td>
<td>重启生效</td>
</tr>
<tr>
<td>AT+CWSAP&#x3D;”ATK-MW8266D”, ”12345678”,1,4</td>
<td>设置 AP 参数。 SSID 为 ATK-MW8266D、密码为 12345678、 通道为 1、加密方式为 WPA_WPA2_PSK</td>
</tr>
<tr>
<td>AT+CWJAP&#x3D;”ALIENTEK”, ”12345678”</td>
<td>加入 WiFi 热点。 SSID： ALIENTEK、密码： 12345678</td>
</tr>
<tr>
<td>AT+CIPMUX&#x3D;1</td>
<td>开启多连接</td>
</tr>
<tr>
<td>AT+CIPSTART&#x3D;0,”TCP”, ”192.168.4.XXX”,8086</td>
<td>建立 TCP 连接到 192.168.4.XXX:8086</td>
</tr>
<tr>
<td>AT+CIPSEND&#x3D;0,25</td>
<td>向 ID0 发送数据</td>
</tr>
<tr>
<td>AT+CIPSEND&#x3D;1,25</td>
<td>向 ID1 发送数据</td>
</tr>
</tbody></table>
<h2 id="9-AP-STA-模式下-UDP-连接"><a href="#9-AP-STA-模式下-UDP-连接" class="headerlink" title="9. AP+STA 模式下 UDP 连接  "></a><font size=3>9. AP+STA 模式下 UDP 连接  </font></h2><table>
<thead>
<tr>
<th>发送指令</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>AT+CWMODE&#x3D;3</td>
<td>设置为 AP+STA 模式</td>
</tr>
<tr>
<td>AT+RST</td>
<td>重启生效</td>
</tr>
<tr>
<td>AT+CWSAP&#x3D;”ATK-MW8266D”, ”12345678”,1,4</td>
<td>设置 AP 参数。 SSID 为 ATK-MW8266D、密码为 12345678、 通道为 1、加密方式为 WPA_WPA2_PSK</td>
</tr>
<tr>
<td>AT+CWJAP&#x3D;”ALIENTEK”,”12345678”</td>
<td>加入 WiFi 热点。 SSID： ALIENTEK、密码： 12345678</td>
</tr>
<tr>
<td>AT+CIPMUX&#x3D;1</td>
<td>开启多连接</td>
</tr>
<tr>
<td>AT+CIPSERVER&#x3D;1,8086</td>
<td>开启服务器，端口号 8086</td>
</tr>
<tr>
<td>AT+CIPSTO&#x3D;1200</td>
<td>设置服务器超时时间 1200s</td>
</tr>
<tr>
<td>AT+CIPSTART&#x3D;0,”UDP”, “192.168.1.XXX”,8086</td>
<td>STA 作为 ID0 连接到 192.168.1.XXX:8086</td>
</tr>
<tr>
<td>AT+CIPSEND&#x3D;0,25</td>
<td>向 ID0 发送数据</td>
</tr>
<tr>
<td>AT+CIPSEND&#x3D;1,25</td>
<td>向 ID1 发送数据</td>
</tr>
</tbody></table>
<h1 id="五、测试实验"><a href="#五、测试实验" class="headerlink" title="五、测试实验"></a><font size=3>五、测试实验</font></h1><h2 id="1-使用前准备"><a href="#1-使用前准备" class="headerlink" title="1. 使用前准备"></a><font size=3>1. 使用前准备</font></h2><h3 id="1-1-所需工具"><a href="#1-1-所需工具" class="headerlink" title="1.1 所需工具"></a><font size=3>1.1 所需工具</font></h3><p>（1）ATK-ESP8266 WIFI 模块一个</p>
<p>（2）USB 转 TTL 模块一个（战舰板板载USB 转 TTL）</p>
<p>（3）电脑安装 CH340 驱动（USB 转 TTL 模块必须）  </p>
<p>（4）网络调试助手<a target="_blank" rel="noopener" href="http://47.111.11.73/docs/tool/ruanjian/ATK-XNET.html">网络调试助手软件(ATK-XNET) 版本：v1.8 — 正点原子资料下载中心 1.0.0 文档</a>，在windows下使用的时候发现无论如何模块都连接不上服务器，所以又找了一个Linux下的，说是在虚拟机中可以正常建立服务器并可以连接mNetAssist（<a target="_blank" rel="noopener" href="https://github.com/hecanbo/mNetAssist">hecanbo&#x2F;mNetAssist: mNetAssist - A UDP&#x2F;TCP Assistant (github.com)</a>），但是吧，我试了，还是不行，后来觉得没必要在这里浪费时间，写个笔记就算了，后面再说。</p>
<p>（5）串口调试助手：<a target="_blank" rel="noopener" href="http://47.111.11.73/docs/tool/ruanjian/ATK-XCOM.html#">串口调试助手软件(ATK-XCOM) 版本：v3.0 — 正点原子资料下载中心 1.0.0 文档</a></p>
<h3 id="1-2-硬件连接"><a href="#1-2-硬件连接" class="headerlink" title="1.2 硬件连接"></a><font size=3>1.2 硬件连接</font></h3><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240109225730589.png" alt="image-20240109225730589" />

<h2 id="2-TCP-Client-透传模式测试"><a href="#2-TCP-Client-透传模式测试" class="headerlink" title="2. TCP Client 透传模式测试  "></a><font size=3>2. TCP Client 透传模式测试  </font></h2><h3 id="2-1-助手配置"><a href="#2-1-助手配置" class="headerlink" title="2.1 助手配置"></a><font size=3>2.1 助手配置</font></h3><ul>
<li>网络助手</li>
</ul>
<p>我们下载上面提到的网络调试助手，并且创建一个server，如下图，注意这里的IP一般都是自动识别：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240109235230086.png" alt="image-20240109235230086" style="zoom: 80%;" />

<ul>
<li>串口调试助手</li>
</ul>
<p>主要是配置一下波特率：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240111075813405.png" alt="image-20240111075813405" style="zoom: 50%;" />

<h3 id="2-2-配置WiFi模块"><a href="#2-2-配置WiFi模块" class="headerlink" title="2.2 配置WiFi模块"></a><font size=3>2.2 配置WiFi模块</font></h3><p>我们在串口调试助手依次输入以下命令：</p>
<table>
<thead>
<tr>
<th>步骤</th>
<th>命令</th>
<th>响应</th>
</tr>
</thead>
<tbody><tr>
<td>（1）设置 WIFI 模式</td>
<td><code>AT+CWMODE=1</code> &#x2F;&#x2F;设置为 STA 模式</td>
<td>OK</td>
</tr>
<tr>
<td>（2）重启生效</td>
<td><code>AT+RST</code></td>
<td>OK</td>
</tr>
<tr>
<td>（3）连接路由器</td>
<td><code>AT+CWJAP=”ALIENTEK”,”15902020353”</code> &#x2F;&#x2F;连接对象路由器的 ssid 和 password</td>
<td>OK</td>
</tr>
<tr>
<td>（4）查询模块 IP</td>
<td><code>AT+CIFSR</code></td>
<td>192.168.1.xxx</td>
</tr>
<tr>
<td>（5）模块连接到 server</td>
<td><code>AT+CIPSTART=&quot;TCP&quot;,&quot;192.168.19.1&quot;,8080</code></td>
<td>CONNECT<br/>OK</td>
</tr>
<tr>
<td>（6）开启透传模式</td>
<td><code>AT+CIPMODE=1</code></td>
<td>OK</td>
</tr>
<tr>
<td>（7） 开始透传</td>
<td><code>AT+CIPSEND</code></td>
<td>OK</td>
</tr>
<tr>
<td>（8）退出透传模式</td>
<td>在透传模式中，若识别到单独的一包数据“ +++”，则退出透传模式。</td>
<td></td>
</tr>
</tbody></table>
<h3 id="2-3-实验效果"><a href="#2-3-实验效果" class="headerlink" title="2.3 实验效果"></a><font size=3>2.3 实验效果</font></h3><p>这里的图和实际效果是直接用的正点原子文档里的，因为我自己在尝试的时候发现网络调试助手识别到的本机IP地址和WiFi模块连接后获取的IP并不在一个网段，即便我改了模块的IP，或者说用自己手机开热点，都无法连接到网络助手的服务器，也没找到解决办法，所以这里就看教程大概了解一下好啦。做完上面的前7个步骤，理论上我们就可以成功连接到服务器了：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240109235245573.png" alt="image-20240109235245573" style="zoom: 80%;" />

<p>连接上服务器后，就可以相互发数据了，如下图  ：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240109235607278.png" alt="image-20240109235607278" />

<p>在透传模式中，若识别到单独的一包数据“ +++”，则退出透传模式。</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240109235704161.png" alt="image-20240109235704161" style="zoom:80%;" />

<p>注意：如果需要模块上电自动连接到某个 IP 并进入透传模式，这个时候需要在模块连接到路由器wifi热点之后，发送AT+SAVETRANSLINK&#x3D;1,”192.168.1.xxx”,8086,”TCP”， 设置模块为上电自动连接到 TCP Server：192.168.1.xxx ， 8086 ， 并进入透传模式。当发送AT+SAVETRANSLINK 指令后，模块断电再上电会自动进入透传模式，此时发送 AT 指令模块是不会回复的（即使透传的服务器不存在，模块也会进入透传模式的）。模块要恢复到 AT 指令模式需要先退出透传模式，然后勾选发送新行，再发送“ AT+SAVETRANSLINK&#x3D;0”，这样上电模块就不会再上电进入透传了。 </p>
<h2 id="3-多连接server"><a href="#3-多连接server" class="headerlink" title="3. 多连接server"></a><font size=3>3. 多连接server</font></h2><h3 id="3-1-配置WiFi模块"><a href="#3-1-配置WiFi模块" class="headerlink" title="3.1 配置WiFi模块"></a><font size=3>3.1 配置WiFi模块</font></h3><p>前 ATK_ESP8266 模块作为 server，需建立多连接，即可以连接多个 client以下为 ATK_ESP8266 作为 STA 模式建立 TCP SERVER 的设置  </p>
<table>
<thead>
<tr>
<th>步骤</th>
<th>命令</th>
<th>响应</th>
</tr>
</thead>
<tbody><tr>
<td>（1）设置 wifi 模式</td>
<td><code>AT+CWMODE=1</code>  &#x2F;&#x2F;设置模块为 STA 模式</td>
<td>OK</td>
</tr>
<tr>
<td>（2）重启生效</td>
<td><code>AT+RST</code></td>
<td>OK</td>
</tr>
<tr>
<td>（3）连接路由器</td>
<td><code>AT+CWJAP=”ALIENTEK”,”15902020353”</code> &#x2F;&#x2F;连接对象路由器的 ssid 和 password</td>
<td>OK</td>
</tr>
<tr>
<td>（4）启动多链接</td>
<td><code>AT+CIPMUX=1  </code></td>
<td>OK</td>
</tr>
<tr>
<td>（5）建立 server</td>
<td><code>AT+CIPSERVER=1,8080</code> &#x2F;&#x2F;设置端口号为 8080</td>
<td>OK</td>
</tr>
<tr>
<td>（6）获取模块 IP 地址</td>
<td><code>AT+CIFSR  </code></td>
<td>OK  <br>IP      &#x2F;&#x2F; IP地址<br>MAC &#x2F;&#x2F; MAC地址</td>
</tr>
<tr>
<td>（7）电脑或者手机连接到 server，电脑或手机作为 client</td>
<td>无</td>
<td>无</td>
</tr>
<tr>
<td>（8）模块向指定通道发送数据</td>
<td><code>AT+CIPSEND=id,size</code><br>id：client 通道号<br>size：要发送的数据长度</td>
<td>OK<br>&gt;</td>
</tr>
<tr>
<td>（9）接收数据</td>
<td>+IPD,id,size:  &#x2F;&#x2F;id:收到数据的 client 通道号， size:接收到的数据长度</td>
<td>OK</td>
</tr>
</tbody></table>
<h3 id="3-2-助手配置"><a href="#3-2-助手配置" class="headerlink" title="3.2 助手配置"></a><font size=3>3.2 助手配置</font></h3><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240111075135425.png" alt="image-20240111075135425" style="zoom:80%;" />

<h3 id="3-3-实验效果"><a href="#3-3-实验效果" class="headerlink" title="3.3 实验效果"></a><font size=3>3.3 实验效果</font></h3><p>我们做第（7）步的时候，模块配置为 TCP Server  ，客户端连接过来如下图所示：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240111075222372.png" alt="image-20240111075222372" style="zoom:80%;" />

<p>第（9）步接收数据的时候如下图所示：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240111075716960.png" alt="image-20240111075716960" />

<h2 id="4-连接原子云"><a href="#4-连接原子云" class="headerlink" title="4. 连接原子云"></a><font size=3>4. 连接原子云</font></h2><p>原子云即原子云服务器，是正点原子推出的互联网云服务平台，它可以实现数据的远程监控、转发和管理等功能。原子云域名为： <a href="%5Bhttps://cloud.alientek.com/">cloud.alientek.com</a>，端口号为： 59666。  </p>
<h3 id="4-1-创建设备"><a href="#4-1-创建设备" class="headerlink" title="4.1 创建设备  "></a><font size=3>4.1 创建设备  </font></h3><p>在创建设备之前， 需登入原子云的网址<a target="_blank" rel="noopener" href="https://cloud.alientek.com/">原子云-用户登录 (alientek.com)</a> 创建并登入账号。创建和登入账号的过程比较简单， 这里不做过多介绍，登入原子云后，如下图所示：  </p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240112190444885.png" alt="image-20240112190444885" />

<p>建议第一次使用原子云的用户，点击原子云首页左下角的“帮助文档”，快速了解原子云服务器。在原子云平台创建设备，首先点击原子云首页左侧导航栏中的“设备管理”，随后在出现的页面中，点击“新增设备”，如下图所示：  </p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240112190511186.png" alt="image-20240112190511186" />

<p>接着在弹出的窗口中，根据 ATK-MW8266D 模块的设备类型选择“ESP8266”，随后根据个人喜好填入“设备名称”和“密码”（这里的密码在就是 ATK-MW8266D 模块通过 AT指令连接原子云时需要的密码），如下图所示：  </p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240112190526692.png" alt="image-20240112190526692" style="zoom:50%;" />

<p>最后，点击“新增”按钮， 即可创建设备，设备创建好后，如下图所示：  </p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240112190541015.png" alt="image-20240112190541015" />

<p>创建好设备后， 系统会自动为设备生成编号， 这个设备编号就是 ATK-MW8266D 模块使用 AT 指令连接原子云时需要的设备 ID。  </p>
<h3 id="4-2-连接到原子云"><a href="#4-2-连接到原子云" class="headerlink" title="4.2 连接到原子云  "></a><font size=3>4.2 连接到原子云  </font></h3><p>建好设备后，就能后根据设备的编号和密码并通过 AT 指令操作 ATK-MW8266D 模块连接原子云了。 具体的 AT 指令如下所示：  </p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta prompt_"># </span><span class="language-bash">使能 ATK-MW8266D 模块的 STA 模式，以连接路由器的 AP</span></span><br><span class="line">AT+CWMODE=1</span><br><span class="line"><span class="meta prompt_"># </span><span class="language-bash">连接路由器的 AP，以访问互联网</span></span><br><span class="line">AT+CWJAP=”ALIENTEK-YF”,”15902020353”</span><br><span class="line"><span class="meta prompt_"># </span><span class="language-bash">连接原子云服务器</span></span><br><span class="line">AT+ATKCLDSTA=”63218710518682355498”,”12345678”</span><br></pre></td></tr></table></figure>

<p>实际在串口调试助手中的操作，如下图所示：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240112190715225.png" alt="image-20240112190715225" />

<p>当串口调试助手显示“CLOUD CONNECTED”后，说明已成功连接上原子云服务器，此时在原子云的设备管理界面，也能够看到对应的设备显示为“已连接”的连接状态，如下图所示：  </p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240112190733184.png" alt="image-20240112190733184" />

<p>当 ATK-MW8266D 模块成功连接原子云服务器后，即进入了透传模式，此时就能够在原子云的对应设备的“消息收发”操作界面通过原子云服务器发送消息至 ATK-MW8266D模块，同时，也能后在该界面下，查看到接收自 ATK-MW8266D 模块的消息，如下图所示：  </p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-31-ESP8266%E6%A8%A1%E5%9D%97-02-AT%E6%8C%87%E4%BB%A4/img/image-20240112190852071.png" alt="image-20240112190852071" />




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    <p><span>文章标题:</span><a href="/post/471fed65.html">LV16-31-ESP8266模块-02-AT指令</a></p>
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